Hello Dr. Green55. Just wondering what if any, nutrient profiles you run or recommend. Thanks for your time.
Here is what I can tell you when it comes to all these bottle nutes I no shit about them I never used them I always only ever mixed my own from dry salts. Luckily for me I had the opportunity to work with some very smart people over the years, Mixing nutes and ratio's I know for me has changed since I started in the 90's until now but one thing hasn't change and is there is no magic nutrient out there, no magic salt or bottle of stuff to use. its about balance and concentration, but that also has to be in balance with your grow style, what your growing ,medium, environment etc. so optimization is going to be when you have all those things working in harmony, otherwise optimization is going to be only as good as your weakest link, light, environment, water nutes c02 etc etc.
So I ran mixes like 300n 90p 435k 225ca 130s 60mg to mixes like 160n 50p 225k 150ca 50mg 70s and everything in between I can assure you lol, and if you want to know I never ran anything that wouldn't grow weed. For the vast majority of growers out there I think the key is a balance mix from start to finish just giving your plant what it needs and not over feeding or under. there is no magic bullet here thats going to be the end all be all of nutrients. but it can get very complicated if you want it to be, but for me thats the part I enjoy and like playing around with but one needs a good understand of nutrient uptake, what the element do, how the ions act with each other etc etc.
So lets talk about Boron as it was mentioned above, what does B do , builds cell walls, root formation has a direct roll in shoot point, bud sites/growth pollen and bud size to name a few . B is also one of the most important element for photosynthesis
So B and Ca are like twins one needs the other so if B is deficient if effects Ca uptake if Ca is deficient you can't have B uptake , So you can have all the Ca you want in your solution but if there is low B it can't be up taken, and to make it more complicated high N locks out B so when i say balance thats what I mean. active ions in the solution that can be absorbed, you can have all the ions you want but if there not active and can't be uptaken its just shit. B also has a roll in enhancing each elements uptake, most notably P and K there is also 3 grades of nutrient uptake NPK being the faster ones Mg,FeS being middle of the road and Ca and B being the slowest. I guess the other factor would be knowing when your plants want each element, Like N basically more in veg then flower, well same as B . a steady amount in veg, and steady amount in flower until about week 6 then it doesn't need it as much, but it spikes at flip. At flip plants also want Ca I feed kelp for that, guess what else they get B within the mater of 10 -14 days your plants may double they need it. still want to mix nutes lol